One Galaxy Sample to Rule Them All: Halo Occupation Distribution Modeling of DES Year 3 Source Galaxies

Abstract

For the joint analysis of second-order weak lensing and galaxy clustering statistics, so-called $3\times 2$ analyses, the selection and characterization of optimal galaxy samples is a major area of research. One promising choice is to use the same galaxy sample as lenses and sources, which reduces the systematics parameter space that describes uncertainties related to galaxy samples. Such a ``lens-equal-source'' analysis significantly improves self-calibration of photo-z systematics leading to improved cosmological constraints. With the aim to enable a lens-equal-source analysis on small scales we investigate the halo-galaxy connection of DES-Y3 source galaxies. We develop a technique to construct mock source galaxy populations by matching COSMOS/UltraVISTA photometry onto {\sc{UniverseMachine}} galaxies. These mocks predict a source halo occupation distribution (HOD) that exhibits significant redshift evolution, non-trivial central incompleteness and galaxy assembly bias. We produce multiple realizations of mock source galaxies drawn from the {\sc{UniverseMachine}} posterior with added uncertainties in measured DES photometry and galaxy shapes. We fit a modified HOD formalism to these realizations to produce priors on the galaxy-halo connection for cosmological analyses. We additionally train an emulator that predicts this HOD to $\sim 2\%$ accuracy from redshift $z=0.1-1.3$ that models the dependence of this HOD on 1) observational uncertainties in galaxy size and photometry, and 2) uncertainties in the {\sc{UniverseMachine}} predictions.

arXiv comment15 pages, 7 figures, 1 table. Accepted by The Astrophysical Journal (Vol. 983 Iss. 2, id. 183)

References in corpus (71)

• Planck 2015 results. XIII. Cosmological parameters
• Stellar population synthesis at the resolution of 2003
• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• Physical Models of Galaxy Formation in a Cosmological Framework
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• The Halo Occupation Distribution: Towards an Empirical Determination of the Relation Between Galaxies and Mass
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• The Luminosity and Color Dependence of the Galaxy Correlation Function
• Large-Scale Galaxy Bias
• The First Release COSMOS Optical and Near-IR Data and Catalog
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• The age dependence of halo clustering
• The Spitzer Legacy Survey of the HST-ACS 2 sq. deg. COSMOS Field: survey strategy and first analysis
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
• A Public Ks-selected Catalog in the COSMOS/UltraVISTA Field: Photometry, Photometric Redshifts and Stellar Population Parameters
• Assembly bias in the clustering of dark matter haloes
• Halo assembly bias and its effects on galaxy clustering
• On the environmental dependence of halo formation
• Practical Weak Lensing Shear Measurement with Metacalibration
• Cosmological Constraints from a Combination of Galaxy Clustering and Lensing -- I. Theoretical Framework
• A marked correlation function analysis of halo formation times in the Millennium Simulation
• COSMOS-DASH: The Evolution of the Galaxy Size-Mass Relation Since z~3 from new Wide Field WFC3 Imaging Combined with CANDELS/3DHST
• Galaxy Assembly Bias: A Significant Source of Systematic Error in the Galaxy-Halo Relationship
• Galaxy Clustering & Galaxy-Galaxy Lensing: A Promising Union to Constrain Cosmological Parameters
• The dependence of dark halo clustering on the formation epoch and the concentration parameter
• Dark Energy Survey Year 3 Results: Weak Lensing Shape Catalogue
• Cosmological Constraints from a Combination of Galaxy Clustering and Lensing -- III. Application to SDSS Data
• On Halo Formation Times and Assembly Bias
• The baryon fraction of LambdaCDM haloes
• The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints
• Beyond Assembly Bias: Exploring Secondary Halo Biases for Cluster-size Haloes
• Assembly bias and the dynamical structure of dark matter halos
• A theoretical framework for combining techniques that probe the link between galaxies and dark matter
• Environmental Dependence of Cold Dark Matter Halo Formation
• Breaking the Degeneracies Between Cosmology and Galaxy Bias
• A mass-dependent slope of the galaxy size-mass relation out to z~3: further evidence for a direct relation between median galaxy size and median halo mass
• The cosmology dependence of galaxy clustering and lensing from a hybrid $N$-body-perturbation theory model
• Constraints on Assembly Bias from Galaxy Clustering
• Spatial Clustering of Dark Matter Halos: Secondary Bias, Neighbor Bias, and the Influence of Massive Neighbors on Halo Properties
• Hyper Suprime-Cam Year 3 Results: Cosmology from Galaxy Clustering and Weak Lensing with HSC and SDSS using the Minimal Bias Model
• Simulations and symmetries
• From Galaxy-Galaxy Lensing to Cosmological Parameters
• Cosmological Constraints from a Combination of Galaxy Clustering & Lensing -- II. Fisher Matrix Analysis
• On Combining Galaxy Clustering and Weak Lensing to Unveil Galaxy Biasing via the Halo Model
• The BACCO simulation project: biased tracers in real space
• The dependence of halo bias on age, concentration and spin
• Environmental Effects on Real-Space and Redshift-Space Galaxy Clustering
• A universal stellar-mass and size relation of galaxies in GOODS-N region
• Joint Analysis of Gravitational Lensing, Clustering and Abundance: Toward the Unification of Large-Scale Structure Analysis
• The Secondary Spin Bias of Dark Matter Haloes
• Photo-z outlier self-calibration in weak lensing surveys
• Dependence of Halo Bias and Kinematics on Assembly Variables
• The cosmological dependence of halo and galaxy assembly bias
• Cosmological inference from emulator based halo model I: Validation tests with HSC and SDSS mock catalogs
• Evidence of Galaxy Assembly Bias in SDSS DR7 Galaxy Samples from Count Statistics
• The Effects of Galaxy Assembly Bias on the Inference of Growth Rate from Redshift-Space Distortions
• Cosmology from Clustering, Cosmic Shear, CMB Lensing, and Cross Correlations: Combining Rubin Observatory and Simons Observatory
• Satellite galaxy abundance dependency on cosmology in Magneticum simulations